"I mean, one of the things that's annoying for fans is that it takes us a long time to do them," he said last month. "Like, you probably won't get [season three] until sometime in 2019."

However, the actor suggested that the wait would be worth it, adding: "Like any good thing, they need time. And those guys work so hard. I mean, they just sit in their apartment and write for 12, 14 hours a day."

"Hearts were heard breaking in Netflix headquarters when the brothers made four seasons sound like an official end, and I was suddenly getting phone calls from our actors' agents," producer Shawn Levy said.

"The truth is we're definitely going four seasons and there's very much the possibility of a fifth. Beyond that, it becomes, I think, very unlikely."